freeman1doma I have two different ESXi hosts: 6.5 and 5.1 versions. On both have the same situation. VM's operation systems are Windows Server 2016 Standart x64, Windows 7 x64, FreeBSD, OpenBSD, it not matter. WAN direct speed on all VMs is up to 700 mbit/s. All have one critical problem with speed through OpenVPN client to different OpenVPN servers(and network behind): very low network speed in tunnel - max up to 6-7 mbit/s. From physical computer through OpenVPN client to my OpenVPN servers speed - up to 50-80 mbit/s. It was tested on E1000 and VMXNET3 vm network adapters - no difference, very low speed in tunnel. VM have 2 vCPU and 2GB RAM. Host ESXi - DELL R730 128 RAM 2 Xeon CPU. Who has seen this type of problem? Please help Server config (OpenBSD 5.9 amd64) proto udp port 1194 dev tun0 ca /home/admin/VpnServer/ca.crt cert /home/admin/VpnServer/server.crt key /home/admin/VpnServer/server.key dh /home/admin/VpnServer/dh1024.pem server 192.168.16.0 255.255.255.0 keepalive 10 120 comp-lzo user _openvpn group _openvpn daemon openvpn persist-key persist-tun client-to-client push "route 192.168.200.0 255.255.255.0" push "route 192.168.100.0 255.255.255.0" push "route 192.168.210.0 255.255.255.0" client-config-dir /etc/openvpn/ccd/ route 192.168.100.0 255.255.255.0 route 192.168.210.0 255.255.255.0 sndbuf 0 rcvbuf 0 Client config (Windows 7 x64) client dev tun proto udp remote x.x.x.x 1194 ca ca.crt cert win.crt key win.key route-method exe route-delay 2 keepalive 10 120 ns-cert-type server comp-lzo persist-key persist-tun sndbuf 0 rcvbuf 0 tun-mtu 1500 mssfix 1450 verb 3
freeman1doma Server # openvpn --version OpenVPN 2.3.10 x86_64-unknown-openbsd5.9 [SSL (OpenSSL)] [LZO] [MH] [IPv6] built on Feb 25 2016 library versions: LibreSSL 2.3.2, LZO 2.09 Client OpenVPN 2.4.0 -- released on 2016.12.27
TinCanTech I would advise you use 2.4 on your server as well as your client .. I use openvpn and I get exactly the speed my internet/Networks can handle. In my experience, unless you know you have a network problem and how to use openvpn to work around it, then I would suggest you try the openvpn default settings for things like MTU, mssfix, fragment and buffers. One simple test you can try is iperf over the internet without using openvpn. Perhaps there is an actual network fault causing the problem.
